Roll for beating-engines.



G.. MILLER. ROLL FOR BEATIQIGENGIINES. APPUCATION FILED .IAN.2?.1910.

' Patented May 4, 1915.

2 SHEETS-SHEET l- UN TEn s'rarns PATENT OFFICE.

GUYON MILLER, or DOWNINGTOWN, PENNSYLVANIA, AssIeNonro, MANUFACTURING COMPANY, or DOWNINGTOWN, PENNSYLVANIA, a comm- TION OF PENNSYLVANIA.

ROLL FOR BEATING-ENGINES.

Specification of Letters Patent.

I Application filed January 27, 1910. Serial No. 540,341.

To all w 10m it may concern:

Be it known that I, GUYON MLLER, a citizen of the United States, residing in Downingtown, Pennsylvania, have invented certain limproi'ements in Rolls for Beating- Engines, of which the following is a specification.

My invention relates to certain improvements in means for retaining the blades of the rolls of beating-engines used to reduce paper and other stock to pulp. Y

The object of my invention is to simphfy the construction 0t the blades and the mechanism by which they ing heads, whereby the blades can be readily assembled on the heads, or removed therefrom in the case of repairs.

In the accompanying drawings z-Figure 1, is an end view of beating roll illustrating my invention; 2, is a transverse sectional view on the line 22, Fig. 1, illustrating the full diameter of the roll; Fig. 3,is a sectional view on the line 3-3, Fig. :2;-Fig. I, is a sectional view on the line 4--4, Fig. 2; Fig. 5, is a perspec tive view of a portion of one of the blades; Fig. 6, 1s a perspective View of a portion of one of the end heads; and Fig. 7, isa dia;

gram view of one of the blades illustrating one of the features of my invention. J

A is a shaft which is mounted in suitable hearings in the beating engine.

B, B are the end heads of the roll and -B', B are the intermediate heads, suitably secured to, the shaft A. The heads have flanges b in which is a series of dovetailed grooves 5, clearly illustrated in Fig.6.

D, D are the blades. The body portion of each blade is of an even thickness throughout, with the exception that at intervals 1 form tapered projections (Z at one side of each blade, as illustrated in Fig. 5. These ,pro ectiOns are spaced apart so as to aline with the heads B, B when they are in position. The outer ends (5 of the blades are slightly beveled on one side, as shown, so

that'the blades are comparatively narrow at the cutting edges 01".

It will be noticed in Fig.7, that the side r 0f t he dovetailed slots 6' are held to the carrya portion of an engine in each head are equl-dlstant from a center from the center of the shaftA. This construction throws the working face 01 of each inrespect to the raowing to this construction.

In order to fasten. the blades firmly to their heads and prevent any longitudinal movement of the heads, I provide wedge shaped wooden blocks E, which are forced into the space between the blades and between the heads. -These blocks preferably extend beyond the inner ends of the blades and interlock, due to the swelling of the blocks when they become wet. I also mount blocks F between each of the blades-these blocks extend from one end of the roll to the other and form the base of the gullet between the blades.

By the above construction Iain enabled to make a roll which-1s economical to manufae' ture' and which can be readily assembled and the parts can be quickly removed when re-' pairs areneces'sary.

"The blades, when placed-in position, are dropped in the proper space-sothat the wedges clear the heads'and by a slight longitudinal movement of the blade eachwedge: shaped section is drawn tightly into its p0- ;sltionin its respective head, after which the blocks are placed in position; securely locking the parts together."

The combination in shaft; heads mounted on the shaft, said heads having, flanges in which area. series of, dove-tailed grooves, the walls ofe'ach. of said grooves being equi-distant from a radial line taken from the center of the roll; a series of reversible blades adapted to fit'the dove-tailed grooves, each of said blades hav:v ing one side straight from top to bottom and line a: radiating a [beating roll, of a Patented-May 4,1915.

each blade having spaced projections at the bottom of the opposite side, said'projections being tapered.v and the outer portion of the name to this specification, in the presence of side of the blade having said projections betwo subscribing witnesses. mg beveled to impart a slight cent to the W 7' T working face of the blade with respect to (IU1 MILLER 5 the radial line of said blade; and filling Witnesses:

blocks mounted between said blades. WM. E. SHUPE,

In testimony whereof, I have signed my WM. A. BARR. 

